Nut-lock.



M. G. MOODY. NUT Loox. LLLLLLLLLLLLLLLLLLLLLLLLLL 8.

UNTTED STATES PATENT orrrcn MASON C. MCCOY, OF WALLA WALLA, WASHINGTON,

NUT-LOCK.

Specicaton of Letters Patent.

Application inea July 23,

upon a bolt' against accidental displacement.

Another object of the invention is the pe-Y i culiar construction of a sectional washer, which is provided with means fr gripping or biting a nut and also the support carrying the bolt, upon which ,the nut is supported; the washer preventing the nut from being accidentally displaced or moved off of the bolt, although the nut can be removed, by the operator, without materially injuring or marring the washer.

A further object of the invention is the construction of a nut lock, which comprises a minimum number of parte, is compara`- tively simple and inexpensive to manufacture, and efficient and durable in operation. With these and other objects in view, the invention consists of certain novel construction combinations, and' arrangements of parts, as will be hereinafter fully described and claimed.

l In the drawings: Figure 1 is a view, in side elevation, of ,a device constructed in accordancewith the present invention. Fig. 2 is a longitudinal, sectional view of the devicel illustratedl in Fig. 1. Fig. 3 is plan view of the toothed face of one of the sections of the washer, and Fig. 4 is a plan view of the cam face of one of the sections, Fig. 5 is a view, in side elevation, of one of the sections of the washer. Fig. 6 is a view, in side elevation, showing theA position assumed. by the sections of the washer when thenut is turned slightly, or accidentally moved upon the bolt; the sections of the washer clamping the support and nut and holding said nut from displacement od of the bolt.

Referring to the drawings by numerals, 1 designates a shank of the bolt, which is provided with a threaded end 2,l and with a head 3 at one end. A nut 4 is threaded upon the bolt and between the nut and the support 5, is positioned a washer, comprising a pair of similarly-constructed sections 6. Each sec- .tion of the washer is provided with a central aperture or bore 7, which is, preferably', larger than the threaded portion 2 of the bolt, so that thesections can be quickly assembled upon the bolt. .Each section is provided with an inner camface 8, and said face is inclined, at 9, terminating in a vertical shoulder 10, so that when the inner faces of the two sections of the washer are placed together, the two shoulders 10 will be positioned parallel, as shown in Fig. 1, preventing one section upon the other section of said washer.

In Fig. 6, I have shown how the sections may be slightly separated, causing' one of the sections to `ride up the inclined face of the other section, thereby forcing the outer toothed face of one section against the nut and the toothed face of the `other section against the support or member carrying the bolt, thereby jamming the nut and support apart, producing a secure lock between said nut and su port, whereby the nut can not be accidental y rotated off of the bolt with respect to the support.

The toothed or biting face of each section allel rows of teeth extending entirely across the face of the section; each tooth being provided with a sharp biting or cutting edge throughout its entire length, .and the inner teeth 11 are of less length than the outer sharpened teeth 12. -At two edges, of the face, there are formed parallel rows of short teeth or lugs 13, which are provided with flat outer faces constituting, stops whereby the jured by the forcing ofthe washer too hard against the support or the nut against the washer, for while the teeth will enter the support and washer a sufficient distance t'o pre vent accidental displacement,- or the nut working off from the bolt, still, by the operator employing a suitable tool, as for instance, a wrench, the nut can be removed off of the I bolt and, consequently, from in en agement with the washer, without materia y injuring the teeth, as would be the case if no means was provided for limiting the depth which the teeth were ermitted to enter the support or the bolt; t e teeth 11 and 13 eX- tend slightly' above the fiat ends of the'auXiliary teeth or lugs 13, for permitting the gripping or biting action of the washer.

It 'is to be noted that the forming of the teeth on the toothed face of each section can from rotating in one direction independently of the washer is formed by a plurality of parl intermediate teeth 11 and 12 can not be in l-be quickly and inexpensively done, .as

sharp leca'nibe used for 'producing the teeth having the cutting ed es, andth'en'some of the outer rows of yteet can be iattened bg 'laying a le atupon the sharpened teet and filing the .same sufficiently to formthe hat ends. v Therefore, it will be seen thatI have provided onl each washer, a series ofparallel lrows of teeth having cutting or sharpened 'edges and a plurality-of rows of blunt'or unsharpenedteeth or stops of less height thanthe sharpened teeth for limiting 'l the cutting or biting action of the washer .l many places', as for instance, u on machineryin'- which the `vvibrationof` t e mechanism would cause-an ordinary nut-to work .off 0f the bolt or in a stationary engine of any kind,

relative tothe member-engagino' .the same. A My nut lock issusceptible ofi-:being used in as well as o n railroad tracks and the like. It will also be'noted that when removing the nut, a vwrench lshould be .employed to li'old the outerhalf of the- Washer'stationary, because when the outer section ofl the washer has' play, it works upo'nthe inclined face forming the cam, as hereinbefore stated, thus forcing each toothed face Aof the washer into the sur'- face vagainst which-it refus, thereby holding the lnut against accidentaldisplacement or vworking off under normal conditions.

j 1. In 'a nut lock, the combination with a l bolt, of a ,sectional washerpositioned upon saidbolt, anut threaded upon said bolt, said sections of .thewasher providedlwith engagcam-surfaces, each section provided 'with anl outerl toothed-face, the nutengagng one of thejtoothed faces, each toothed face comprisinga'plurality of rows of sharpened teeth With a plurality of rows of teeth having hat orblunt edges positioned'outside of the rows of sharpened teeth.A l

2. In a nut lock,the combination With a bolt, a nut threaded thereon and a washer in y engagement with said bolt,.said vwasher .pro-

vided with toothedlfaces upon opposite sides, .each toothed face provided with a sharpened tooth adapted to enter a surface engaging the same, and each toothed face provided Jfrom entering the engaged surface too far,"

with a stop for preventing or limiting the tooth 3. The combination with a support anda y bolt carried thereby, a nut.` threaded up'ontioned between saidirst-mentioned teeth,V

said sharpened tooth having its outer cutting edge positioned in plane outside of the horizontal plane in'lwhich the blunt jends ofv the first-mentioned teeth are formed.

.In testimony whereof I hereunto aiiX my signature in presence olf tw'o witnesses.

` o' MASON C. MCCOY.

lVit'nesses: 3' l p GEORGE W, THOMPSON,"

Gino: L. THoMrsoN. l 

